APA Style

Seeds, Michael, Backman, Dana.. (2014). Horizons : exploring the universe (13th ed). USA: Brooks/cole.

Chicago Style

Seeds, Michael, Backman, Dana.. Horizons : exploring the universe. 13th ed USA: Brooks/cole, 2014. Textbook.

MLA Style

Seeds, Michael, Backman, Dana.. Horizons : exploring the universe. 13th ed USA: Brooks/cole, 2014. Textbook.

Turabian Style

Seeds, Michael, Backman, Dana.. Horizons : exploring the universe. 13th ed USA: Brooks/cole, 2014. Textbook.